From DPW:
“The Department of Public Works (DPW) will begin posted residential street sweeping on Tuesday March 1. The program will run through October 30, and motorists are asked to obey posted signs indicating the schedule of parking restrictions to ensure streets are swept thoroughly.
The residential street sweeping program is an important tool used to keep the District clean. In previous years, DPW sweepers have collected more than 2,000 tons of litter and pollutants as they traveled more than 31,095 miles across the city. DPW also sweeps neighborhoods where parking is restricted, during sweeping hours. DPW will sweeps neighborhoods where there are no parking restrictions, as well as sections of arterial roadway when curbsides are available.
To remind motorists of the restrictions, DPW will issue warnings between Tuesday, March 1 and Monday, March 14, to vehicles parked during the sweeping periods. After March 6, violators will be subject to $45 fines. Generally, parking is prohibited for two hours (9:30 am to 11:30 am or 12:30 pm to 2:30 pm) while sweeping is underway. When parking is allowed on only one side of the street, vehicles can park on one side, and may park on the other side the following day.”